As many of you know (mostly from my previous posts) I’ve been putting together a full body scanner. Well, I actually got it built over a month ago, just haven’t gotten around to posting about it. Now I say its built, but I have yet to wire and program it for automation.
My goal with this is to make an elegant and cost effective solution for 3D scanning and printing. My next stage after wiring is to take it out to local events. I bit the bullet and bought a Replicator 2, so that I can have a high turnout rate. Future plans involve incorporating scans into digital avatars for use with Occulus Rift and Leapmotion.
I ordered the parts I needed last week to build my 3D scanner mentioned in a previous post and I’ve cranked out most of the system in only two nights.
The rotating platform (pics after the break), is finished mechanically, I’ve still got some prettying up to do. It can support a person of at least 200 lbs. I played around with a lot of different motors and drive methods, but after looking through a parts bin I found a high torque motor. I attached it to the base of the platform and the lazy susan helps make it easier for it to rotate. This motor was perfect to keep the platform low profile.
I’m using Open rail to guide the gantry for the Kenect sensor. Its perfect and modular. I ordered enough to be able to scan at most a 7 ft person.
In my original design I had intended to use a pulley system to actuate the gantry. I ended up JB welding timing belt along the aluminum U-channel holding the open rail. I’m going to use a stepper with 3D printed pulley (shown above) to actuate. Later tonight I hope to design and laser cut a plate that’ll hold both the kinect and the stepper.
Next steps after prettying things up and getting them actuated is attaching a rangefinder to the kinect to let it know when its gone past the top of the scanning subject. That should help in automating the scan positioning process.
I came up with this a few days ago after playing around with a software called ReconstructMe. This fantastic piece of software renders a 3D model using an off the shelf consumer 3D sensor like the Microsoft Kinect or Asus Xtion. I did a 3D scan of myself by spinning around in an office chair a few times and printed a bust of myself on my Makerbot. That really got me going. I’ve seen other full body scanners using the kinect sensor, but I want to make one better, faster, stronger, cheaper, and more versatile.
So far I’ve modeled it out with all real measurements. Its mostly just to give others a better idea of whats in my head. The whole thing will be made to fold together or screw apart in certain areas. I want this to be completely portable.
Now, a basic explanation of the function. Subject stands on the platform. The platform rotates. The kinect sensor will go up and down via a pulley system. Using a rangefinder to determine when the sensor has gone over the height of the object, a servo will tilt the kinect down to scan the top of the subject being scanned. There is a curved wall behind the subject to prevent background information from interfering. This all will provide a perfect 3D scan.
I’ll post more soon. I begin the build next week and I should have it finished ideally in a day two.
My roommate and I got the chance to advance screen the new movie, DREDD. Being a fan of the 1995 rendition of Judge Dredd I was not entirely enthused by it, thought it was still a great action flick. I set out to build this prop from the first Judge Dredd movie. Sunday I designed the laser cutting patterns using 123dMAKE using a 3D model of the gun. For some reason I got 3 really weird stackable layers. I took the pattern given by the program and edited myself and added most of the details and cut layers as needed til I got the right thickness. So basically this gun is just stacked piece of MDF cut in the shape of the gun glued together, sanded, and painted. The red parts are cut out of acrylic. This build did not take me much time and for that I am greatful because I have a lot more to put together if I am to have a Judge Dredd costume ready by Halloween.
So this is actually still a work in progress. The body is all laser cut and the joystick top was printed on an Ultimaker with emerald PLA. I’ve posted the files for this project on thingiverse . The body is designed to house a rasp-pi with holes for audio/video and the SD card for easy change out of games. Idealy MAME will be installed on the rasp-pi and GPIO pins will be used to interface with the buttons and joystick. Unfortunately I ordered my Raspberry-pi over the summer and still haven’t recieved it. So it may be awhile before I see this beauty work.
Since we got the laser cutter at the lab I’d been wanting to build an arcade machine with it right away….but back then the laser was down for the first few weeks we had it. We also had our Retro gaming night quickly approaching I wanted something to show off.
I ordered some Happ controls arcade buttons and joysticks. For the interface to MAME I bought a Xin-Mo 2 player arcade to usb interface. I went to michaels, bought to wooden boxes and stained them. After that it was a matter of drilling holes and mounting. Bada bing bada boom, arcade controllers.
So if you’ve met me or read the rest of my blog, you’ll know I bring up HeatSync Labs pretty often. Thats because its just an amazing resource that a lot of people are starting to take advantage of. Its also more than just a resource of tools, its a resource of people and a hub for various communities within the larger community. We’ve got everything from 3D printing, robotics, custom electronics, food hacks, music hacknights, to even knitting groups.
This is by far probably one of my most popular builds. It all started when a friend came to me with a commission project to make something “steampunk and tinkerbell” for a friend’s christmas present. Eventually I decided to make steampunk goggles. I found this pattern on thingiverse for very basic goggles. I liked how the lens and shape were but not the leather or the strap holders. I redid it with thick leather with laser etched patterns. I riveted on leather straps, the more rigid leather made it a great way to hold it. Eventually the Arizona Steampunk Society got wind of this and asked me to make them 30 goggle kits for a goggle workshop at Phoenix Comic Con. People loved ‘em. I’ll soon be selling these on etsy with options for custom etch patterns. A lot of steampunkers want unique goggles purely for decoration, I figure this’ll give a great alternative to having to glue bits and pieces to fiberglass brazing goggles.
A few months ago I put this together. I just lasercut a copy of this tardis from Thingiverse but I altered it a bit. I didn’t use some of the front panels and I lined the inside of the walls with a light blue film. I bought a flameless candle from the dollar store, gutted it, added the LED on the top to it and put it inside the Tardis (which I spray painted blue). Voila, easiest tardis build ever.
So in December I had the opportunity to visit famous Brooklyn hackerspace, NYC Resistor. They have a wonderful space hidden on the fourth floor of a building in Brooklyn. The folks there greeted me and let me take a look around. After eating delivery indian food, much to my surprise Bre Pettis, co-founder and CEO of Makerbot industries walks through the door. I had a chance to talk and meet with him and hes a pretty cool guy. At the time he was looking into clock making with a 3D printed parts.